Tiptop Z3000 Smzrt VCO - Manual (Page 16)

FM - Continued: Frequency Ratios
MIN MAX
MIN MAX
LOW HIGH
SYNC HSM
1V/Oct 1V/Oct
Linear FM
INPUT
PWM FM 1
LOW HIGH
Hz
Oct
FM 2
INPUT
CV IN INPUT
CV IN CV OUT
INPUT INPUT
+
+ +
+
EXT IN
FREQUENCY/NOTE/OCTAVE
Tipt
p
A u d i o
Z 3 0 0 0 Z 3 0 0 0
Smart VC-Oscillator FREQUENCY
FINE TUNE
PULSE WIDTH
PWM
FM
MIN MAX
MIN MAX
LOW HIGH
SYNC HSM
1V/Oct 1V/Oct
Linear FM
INPUT
PWM FM 1
LOW HIGH
Hz
Oct
FM 2
INPUT
CV IN INPUT
CV IN CV OUT
INPUT INPUT
+
+ +
+
EXT IN
FREQUENCY/NOTE/OCTAVE
Tipt
p
A u d i o
Z 3 0 0 0 Z 3 0 0 0
Smart VC-Oscillator FREQUENCY
FINE TUNE
PULSE WIDTH
PWM
FM
Modulator
@
130Hz Carrier
@
65Hz
Ratio
=
2:1
The
frequency
ratios
and
modulation
index
define
the
tone
and
harmonic
content
of
the
resulting
sound.
Specific
frequency
ratios
will
create
harmonic
and
inharmonic
sounds,
as
previously
described,
and
the
Z3000
allows
the
user
to
precisely
set
those
ratios
in
any
of
its
three
modes.
While
playing
an
FM
patch
across
a
range
of
several
octaves,
the
frequency
at
these
octaves
may
not
maintain
the
frequency
ratio
that
was
set
at
another
octave.
This
variation
in
frequency
is
an
inherent
feature
of
analog
VCOs.
The
Z3000
makes
it
possible
to
overcome
this
issue
by
fine
tuning
the
desired
frequencies
at
both
ends
of
the
range
until
both
are
set
accordingly
for
smooth
harmonic
sounds
spanning
several
octaves.